Hidaka Mountains
Mountains Rugged mountain range forming Hokkaido's backbone
The Hidaka Mountains of Hokkaido form a rugged, forested range for long-distance hiking, alpine routes and backcountry skiing. Outdoor enthusiasts come for multi-day treks, mountain huts and summer wildflower meadows at higher elevations.
The Hidaka Mountains are a rugged mountain range in southeastern Hokkaido, Japan, forming a major spine of high peaks and steep ridges on the island. The range includes alpine terrain and several summits above 2,000 metres, the highest being Mount Poroshiri (2,052 m).
The range is the result of tectonic uplift and long-term erosion, producing sharp ridges and deep valleys typical of Hokkaido’s mountain geology. Over the 20th century parts of the range have been designated for conservation and recreational use.
The Hidaka Mountains run along southeastern Hokkaido, extending toward the Pacific coast; they lie well southeast of Sapporo and form a dominant natural feature of Hokkaido’s interior and coastal transition zone.
- Seasonal access: Summer months are the main season for hiking and ridge traverses; many routes are alpine in character and require good fitness and route-finding skills.
- Protected landscapes: The range contains protected areas and quasi-national parks that cover significant tracts of alpine and subalpine habitat, important for wildlife and river headwaters.
What to See #
- Mount Poroshiri: Mount Poroshiri is the highest peak in the range at 2,052 metres and is a principal objective for mountaineers and experienced hikers.
How to Get to Hidaka Mountains #
Access points into the Hidaka range are reached by regional roads and rail from Sapporo and other Hokkaido towns. Local buses and private shuttles serve trailheads in the summer season; exact logistics vary with route and operator.
Tips for Visiting Hidaka Mountains #
- Hire local mountain guides for longer alpine routes; the Hidaka range has remote valleys and variable weather.
- Expect challenging terrain and leave itinerary details with local authorities if attempting multi-day trips.
- Summer (July-September) is the most sensible window for high ridgelines and passes.
Best Time to Visit Hidaka Mountains #
Summer months provide the safest access for trekking and mountaineering; winter is for experienced mountaineers only.
Weather & Climate near Hidaka Mountains #
Hidaka Mountains's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with mild summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -16°C to 20°C. Abundant rainfall (1340 mm/year), wettest in September.
January
January is the coldest month with highs of -7°C and lows of -16°C. Moderate rainfall (66 mm) and mostly overcast skies.
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February
February is freezing with highs of -6°C and lows of -16°C. Moderate rainfall (54 mm) and mostly overcast skies.
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March
March is freezing with highs of -3°C and lows of -12°C. Regular rainfall (86 mm) and mostly overcast skies.
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April
April is cold with highs of 4°C and lows of -4°C. Regular rainfall (97 mm) and mostly overcast skies.
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May
May is cold with highs of 10°C and lows of 1°C. Significant rainfall (112 mm) and mostly overcast skies.
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June
June is cool with highs of 14°C and lows of 6°C. Significant rainfall (110 mm) and mostly overcast skies.
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July
July is cool with highs of 18°C and lows of 11°C. Significant rainfall (139 mm) and mostly overcast skies.
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August
August is cool with highs of 20°C and lows of 13°C. Significant rainfall (169 mm) and mostly overcast skies.
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September
September is cool with highs of 15°C and lows of 8°C. The wettest month with heavy rain (179 mm) and mostly overcast skies.
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October
October is cold with highs of 10°C and lows of 1°C. Significant rainfall (141 mm) and partly cloudy skies.
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November
November is freezing with highs of 3°C and lows of -5°C. Significant rainfall (111 mm) and mostly overcast skies.
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December
December is freezing with highs of -4°C and lows of -12°C. Moderate rainfall (76 mm) and mostly overcast skies.
